Good explanation on this valve set up. As we see more and more Rainwater Harvesting Systems changing to a potable system this will be a game changer. Nobody seems to want to go out and change the valves, everything automated. Heck I cant even get our customers to clean the pre-filtration on a regular basis. I think I will send this video to our water district and see if they will approve it for use in this area. If that is ok with you. We will talk sone, Thanks Rainwater Ranch